diff --git a/.travis.yml b/.travis.yml
index 70b9d2133..f89db54c9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,9 @@
 language: rust
+cache:
+  directories:
+    - /home/travis/.cargo
+before_cache:
+  - rm -rf /home/travis/.cargo/registry
 before_install:
   - curl -OL https://github.com/google/protobuf/releases/download/v3.4.0/protoc-3.4.0-linux-x86_64.zip
   - unzip protoc-3.4.0-linux-x86_64.zip -d protoc3
diff --git a/Jenkinsfile b/Jenkinsfile
index 48a07e1e7..11cbf0abe 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -24,7 +24,9 @@ pipeline {
 				sh 'cargo test --verbose --all'
 				sh 'cargo test --verbose --all --release'
                 sh 'cargo test --manifest-path eth2/state_processing/Cargo.toml --verbose \
-                               --release --features fake_crypto --ignored'
+                               --release --features fake_crypto'
+                sh 'cargo test --manifest-path eth2/state_processing/Cargo.toml --verbose \
+                               --release --features fake_crypto -- --ignored'
 
 			}
 		}
diff --git a/beacon_node/beacon_chain/test_harness/src/lib.rs b/beacon_node/beacon_chain/test_harness/src/lib.rs
index 0703fd4a5..e93fa7003 100644
--- a/beacon_node/beacon_chain/test_harness/src/lib.rs
+++ b/beacon_node/beacon_chain/test_harness/src/lib.rs
@@ -8,7 +8,7 @@
 //! producing blocks and attestations.
 //!
 //! Example:
-//! ```
+//! ```rust,no_run
 //! use test_harness::BeaconChainHarness;
 //! use types::ChainSpec;
 //!